NESHAP for Mineral Wool Production (40 CFR part 63, subpart DDD) (Renewal)

The National Emission Standards for Hazardous Air Pollutants (NESHAP) for Mineral Wool Production were proposed on May 8, 1997, promulgated on June 1, 1999, and amended on July 29, 2015. These regulations apply to both new and existing mineral wool production facilities with cupolas and/or curing ovens. These standards apply to owners or operators located at a plant site that is a major source of hazardous air pollutant (HAP) emissions. This signifies that the plant has the potential to emit any single HAP at a rate of 9.07 megagrams (10 tons) or more per year or any combination of HAPs at a rate of 22.68 megagrams (25 tons) or more per year. New facilities include those that commenced construction or reconstruction after the date of proposal. This information is being collected to assure compliance with 40 CFR Part 63, Subpart DDD. In general, all NESHAP standards require initial notification reports, performance tests, and periodic reports by the owners/operators of the affected facilities. They are also required to maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of an affected facility, or any period during which the monitoring system is inoperative. These notifications, reports, and records are essential in determining compliance, and are required of all affected facilities subject to NESHAP.

The latest form for NESHAP for Mineral Wool Production (40 CFR part 63, subpart DDD) (Renewal) expires 2023-01-31 and can be found here.